At most car dealerships a car salesman does not actually get a salary. A lot of times car salesman are only paid on a comission which means that they get paid when they actually sell a vehicle. They are paid a percentage of the sale. They may also get paid a minimum hourly pay.
Those in car sales have salaries which vary according to sales made, since most of their salaries are commission-based. They typically make between $30,000 and $40,000 per year.
It depends on what kind of cars s/he sells. Salaries range from the low twenties and upwards to more than $100K. The location and economy are major factors.